Paperboard machine



Sept. 2, 1924. I 1,507,373

J. H. GREENSTREET PAPER BOARD MACHINE Filed April 26. 1-921 2 Sheets-Shea! 1 [NV EN TOR. I450 h. zzensreezr A TTORNE Y Se t. 2, 1924. 1,507,373

J. H. GREENSTREET PAPER BOARD MACHINE Filed April 26. 192 2 Sheets-Sheet 2 F 'INVENTOR. J/lso/v' hf efznsrezez' iii/Aw A TTORNEYS.

Patented Sept. 2, 1924.

UNITED STATES PATENT oFFicE.

JASON H. GREENSTREET, OF INDIANAPOLIS, INDIANA; CHARLES J. GREENSTREET ADMINISTRATOR OF THE ESTATE OF SAID JASON H. GREENSTREET, DECEASED.

PAPERBOARD MACHINE.

Application filed April 26,1921.

T 0 all whom it may concern Be it known that I, JAsoN H. GREEN- STREET, a citizen of the United States, and a resident of Indianapolis, county of Marion, and State of Indiana, have invented a certain new and useful Paperboard Machine; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which like numerals refer to like parts.

This invention relates to a paper folding machine for forming a paper board provided with a plurality of folds therein. su h a board being illustrated and claimed in a co-pending application, Serial No. 34:6,231, filed December 20, 1919.

The chief object of this invention is to provide means for folding paper and securing the folds thereof to form a paper board of the character indicated, which means is simpe in construction, compact in arrangement, and positive in its action.

The chief feature of the invention con sists in the means for creasing and folding the paper and the means for conveying the paper, as well as receiving the folded paper after being folded.

Another feature of the invention consists in the means for securing the folds of paper together to form a paper board.

A further feature of the invention consists in the actuating means for the securing means being operable by the paper creasing 1 means, and, therefore, operable in timed relation with the folding means to apply suit-- able adhesive material to the paper, in proper position to secure the folds together and apply said adhesive to no other portion of the paper. v

The full nature of the invention wil be understood from the accompanying drawings and the following description and claims.

Inthe drawings,'Fig. '1 is a side. eleva' tional view of the invention showing the same suitably mounted. Fig. 2-is'a similar view of the same machine taken from the opposite side thereof. Fig. 3 is a top plan view of the machine. 4; is an enlarged side elevational view of the paper folding, creasing and adhesive applying means in the non-folding, non-creasing and non-- applying position. Fig. 5 is a simi ar View of a portion of the mechanisnr shown in Serial No. 464,665.

Fig. 4 but showing the creasing, folding and adhesive-applying mechanism in the creasing and adhesive-app ying position. Fig. 6 is a similar view of the same parts in the folding position.

In the drawings, 10 indicates asuitable platform or table supported by the legs 11, and also supported by said legs is a subplatform 12. Suitably supported upon the sub-platform is a power means, such as the electric motor 13. Suitable standard means rotatably supports a shaft 17, and said shaft 17 is operatively associated with said electric motor 13 by suitable means, such as the sprocket gear 18 and pinion 14: connected by a sprocket chain 19. The shaft 17 is extended and carries upon said extended end a circular disk 20 eccentrically positioned with respect to the shaft 17. A housing 16 encloses said circular eccentric disk and. is eccentrically movable by said disk in the rotation of the shaft 17. The housing 16 is suitably connected by a connecting and eccentric rod 24 to a crank arm or lever 25 for transmitting motion from the shaft 17 to the feeding means.

ridjustably secured upon the main power shaft 17 and rotatable therewith is a cam 26, which cam in the present invention 1s also shown circular in form and is eccentrically supported upon said shaft. Suitably supported adjacent the cam 26 is a cam fo lower or roller 27 supported in one end of a bifurcated rod 28. A tubular housing, socket or guide 29 slidably supports the rod or bar 28, and-positioned between the bifurcated ends supporting the roller 27 and said housing is a coiled spring 30 for normally forcing the roller into engagement with the cam 26. The housing 29 is provided with. an extending arm 32 by which the same is adjustably positioned upon the machine and is rigidly secured thereto through the upwardly extending bracket Suitable bolt and nut means 341: provides an adjustable connection between the bracket 83 and the extension or arm 32. Another arm extends from the tubular guide 29 towards the shaft and terminates adjacent thereto in a co lar portion 36 which i; rotatably mounted on said shaft 17. Suitable collar means 37 adjustably positions the cam and the guide in aligned relation with each other upon said shaft. Since a plurality of the foregoing mechanisms may be and preferably are provided, itwill be understood that the same are substantially similar to that hereinbefore described.

Theother end 38 of the bar 28 extends through the guide 29 and pivotally supports between the ear portions 39 a tongue or plate portion 40, which in turn supports a folding plate or bar 41 provided with a face plate 42 having a relatively blunt edge 43. The plate portion 41 is provided with a tapered face adjacent the plate 42, the aforesaid construction being shown clearly in Figs. 3 to 6 inclusive. Suitable spring means, such as the spring 44, is associated with the plate 41 to maintain said plate 41 in engagement with the table or platform 10 and the strip of paper 9 interposed therebetween. In the present instance there is a spring 44 for each rod or bar 28. One end of the-spring 44 is secured to said rod adjacent the pivotal support of the tongue 40, and the other end of said spring is associated with the tongue 40, as illustrated. From the foregoing, it will beunderstood that the cams 26 are adapted to reciprocate the plunger bars 28 in the guides 29, the plate 41 being moved along the table or platform 10 until said cam has reached itseXtreme throw. In the further rotation of the cams 26, the springs 31 will retract the bars 28, and, therefore, the plate 41.

As shown clearly in Figs. 4 to 6 inclusive, the table 10 is suitably slotted at and positioned in said slot is a creasing plate or bar 51 provided with a tapered or beveled face so that the same may be retracted from its projecting position as shown in Figs. 4 and 6into the position shown in Fig. 5. The plate 51 is pivotally supported at 52, and thus the plate 51, as shown in Figs. 4 and 6, is adapted to elevate thepaper 9, and as shown clearly in Fig. 4, said elevation forms a hump, which in the forward movement of the plate 42 forms a loop or hump 8. The blunt edge 43 of the plate 42 engages the aforesaid elevation shown in Fig. 5, and, therefore, moves the paper forwardly upon itself to form the aforesaid loop, as well as tilt the plate 51 upon its pivot 52 and posi tion the same in a retracted position with respect to the slot 50. The perforated plate 10 is provided with supports or guides at 53, and in the present invention but two of said supports are illustrated. Suitable plate or bar and plunger means 54 are slidably supported upon the plate 10 and are adapted to register with the opening 50, as shown clearly in Figs. 4 to 6 inclusive. The plun ger 54 is provided with a plurality of pin and slot connections 55 for guiding the same and also limiting the downward or retractive position of said plungers.

The means for actuating the plate or plates 54 in timed relation with the remainder of the mechanism comprises a segmental gear 56 associated with a gear 57 upon a transverse shaft 58, which gear in turn is adapted to mesh with a rack portion 59 formed upon theplunger 54. A suitable receptacle or container 49 is secured to the under face of the table 10 and encloses the creasing plate 51 and the plungers' 54, as well as the intermediate means. The container 49 is adapted to contain suitable adhesive material, such as the silicate 48, and it will, therefore, be understoodthatsin'ce the level of the silicate is maintained by any suitable means at a level higher than the plungers 54, said plungers, when projected through the openings 50, will carry a suitable amount of adhesive material upwardly and present the same tothe under face of the paper 9. Figs. 4 and 5 clearly illustrate the timed relation existing between the means for creasing, folding and securing the paper; the sequence of operation being the creasing of the paper, the humping of the same, simultaneously with the applying of adhesive thereto, and then the folding of the hump into a fold with the adhesive supplied portion within the fold forming portions of the paper.- Associated with the 7 plate 42 is a suitably formed receiving and guide plate 47 whiclrcooperates with the plate 42 to fold the hump or loop into a fold.

After the paper has been folded, the same is received by suitable pressing means which may comprise a pair of IOll81'S 60 and 61 supported upon the shafts 62 and 63 respectively. Upon the rollers 60 and 61 are supported a pair of endless belts or conveyors 64 and 65 which are supported by other rollers 66 and 67 respectively. The rollers 60, 61, 66 and 67 are so positioned that a tonsiderable portion of said'belts or conveying means arein engagement with each other and travelain the same direction, although oppositely upon the several roll-- ers. Thus, the upper portionof the lower belt travels in the same direction as the lower portion of" the upper belt, bot-h belts running in opposite directions. The belts are run at any convenient speed by means hereinafter to be described. In the forward movement of the folding plate-42, the paper is advanced at a greater rate of speed than the feeding normally advances with said paper.' One portion of the paper is thus tucked under another portion of the paper with the assistance of the plate 47 and upon retraction or withdrawal of the plate 41, the belts 64 and 65 draw the paper for wardly. Said rollers 60 and 61' with the assistance ofsaid belts maintain the folded portions of the paper in folded relation until the adhesive applied to the folded portions of the paper secures said portions in folded relation.

The means for actuating the feeding means comprises a pair of sprocket gears 166 and 167.. Between said sprocket gears is'an'idler'gear; 69, and associated with all of said sprocket gears is a sprocket chain 68, whereby the endless belts 64 are driven in the aforesaid relation. The means for driving the sprocket gear 166 includes, see Fig. 4, a ratchet wheel associated with which is a detent or pawl 71 pivotally supported upon the lever 25 and normally maintained in engagement with said ratchet wheel by suitable spring means 72. Thus, as the eccentric rod is moved back and forth in therotation of the shaft 17,-the lever 25 carrying the pawl 71 advances the, ratchet wheel 70, thereby moving the sprocket gears 166, 167 and 69 with the sprocket chain 68 to advance the belts 64f and 65 as previously described. In the aforesaid actuation, the same preferably is intermittentwith this qualification, that for the successful operation of the machine, the plate 42 must advance relatively faster than the paper is advanced at the time of folding so that the paper will be folded.

lVhile the invention has been illustrated in one of its simplest forms, and details thereof have been fully described in the foregoing specifications, said specifications are to be considered as. illustrative rather than restrictive in character. Various modifications will readily suggest themselves to those skilled in the art to which this invention applies, some of these modifications having been suggested herein, but the aforesaid modifications are all considered to be within the broad purview of the invention, as outlined by the appended claims.

The invention claimed is:

1. In a paper folding machine, the combination of paper feeding means, tiltably mounted paper creasing means, and reciprocatory paper folding means coacting with said paper creasing means to simultaneously tilt the same to crease the paper prior to folding.

2. In a paper folding machine, the combination of paper feeding means, pivotally and yieldingly mounted paper creasing means, and reciprocatory paper folding means associated with said creasing means to crease the paper and move the paper creasing means out of engagement there with, said folding means having a linear velocity greater than the paper at the time of folding.

3. In a paper folding machine, the combination substantially as set forth of paper feeding means, paper folding means, and adhesive applying means for applying adhesive prior to the completion of the folds, said paper folding means having a greater linear velocity than the paper at the time of folding.

a. In a paper folding machine, the combination substantially as set forth of paper feeding means, paper creasing means, paper folding means, and adhesive applying means, for applying adhesive prior to the completion of the folds, said paper folding means having alinear velocity greater than the paper at the time offolding.

In a paper folding machine, the combination of paper feeding means, paper folding means, adhesive applying means, and means'operable by the folding means for actuating the adhesive applying means in timed relation therewith, substantially as set forth. I

6. In a paper folding machine, the combination of paper feeding means, paper creasing means, paper folding means, adhesive applying means, and means operable by the paper creasing means for actuating the adhesive applying means in timed relation with said folding means, substantially as set forth.

7. In a paper folding machine, the combination of means for advancing the paper at an advanced speed to form a loop, means for applying adhesive material to the paper to secure the folds when formed, means for limiting the format-ion of the loop, and means for compressing the limited loop to form a flat fold.

8. In a paper folding machine, the combination of means for advancing the paper at an advanced speed to form a loop, means for applying adhesive material to the paper to secure the folds when formed, means for operating said adhesive applying means in timed relation so as to apply the adhesive material to the desired portion of the fold to secure the same, means for limiting the formation of the loop, and means for compressing the limited loop to form a flat fold.

9. In a paper folding machine, the combination of means for feeding paper. a plate adjacent thereto for folding the paper, rotatable eccentric means for actuating said plate, slidably mounted means for supporting said plate, means in engagement with said eccentric means and supported by said supporting means, and yielding means for normally maintaining said last mentioned means in engagement with said eccentric means and for retracting said slidable supporting means to retract said plate.

10. In a paper folding machine, the combination of means for feeding paper, a plate adjacent thereto for folding the paper, rotatable eccentric means for reciprocating the plate, slidably mounted means pivotally supporting said plate, yielding means associated with said slidable means and said plate for maintaining said plate in engagement with the paper, and other yielding means associated with said slidably mounted supporting means for maintaining said means in engagement with said eccentric actuating means and for retracting said plate,

11. In a paper folding machine, theeombination of means for feeding paper, a reciproeatory plate for folding the paper, a plate pivotally supported adjacent the paper folding plate for creasing the paper, an adhesive applying bar forapplying adhesive to the paper at the fold, and gear means for moving said bar and movable by said paper creasing means. 2

l2. Ina paper folding machine, the combination of paper feeding means, a reciproeatory plate for folding the paper,a creasing plate pivotally supported adjacent the paper folding plate, an adhesive applying bar -for applying adhesive to' the paper at the fold, raok.;means for reciprocating said adhesive applying bar, gear means meshing with said rack means, other gear means 0perableby said creasingplate and meshing with said last mentioned gear means for reeiprooating said adhesive applying bar in timed relation )"lth said paper creasing.

means. 1 v

i 13. In a paper folding machine, the combination of paper fee-ding means, paper areas ing means, paper folding means, adhesive applying means, and a single power means for operating all of said means in timed relation with each other substantially as set forth to fold and paste a paper sheet.

14. In a apefrfolding machine theoombination o f paper folding means and adhesive applym' g means associated together in timed relation for applying adhesive to the paper prior to the completion of the folding wherebythe adhesive is completely covered by the completed folds. a

In witness whereof, I have hereunto affix-ed my signature. I

' JASON H, GREEN STREET.

Certificate of Correction.

It is hereby certilied that the grantee in Letters Patent No. 1,507,373, granted September 2, 1924, upon the application of Jason H. Greenstreet, of Indianapolis, Indiana, for an improvement in Paperboard Machines, was erroneously described and specified as Charles J. Greenstreet, adn'iinistrator of the estate of said Jason H. Greenstreet, deceased, Whereas said grantee should have been described and specified as Charles J. Greeas't'r'eet, executor of the estate of said Jason H. Greenstreet, deceased, as shown by the records of assignments in this office; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Ohice.

Signed and sealed this 11th day of November, A. D. 1 924.

[SEAL] KARL F ENNING,

Aoti/ng Uom/mdssz'oner of Patents. 

